WIMBLEDON -- He was an implacable force, as cool and studied as his opponent across the net on Centre Court, Rafael Nadal, was passionate and hot. Novak Djokovic was back in the Wimbledon semifinals for the first time in three years Saturday, seemingly a different, changed man. Head bowed between points, eyes fixed on the grass at his toes, Djokovic stood ramrod straight, studying his strings as Nadal completed his pre-service rituals, dipping into that signature receiver's squat only at the last moment.
There were only the briefest glimpses of the "old" Djokovic, once given to tearing open his shirt, pounding his heart with a fist, bellowing in triumph.